Cork.



, EMIL TUGENDREICH, OF JERSEY CITY, NEW JERSEY.

To all whom it may concern:

Be it known that I, EMI'L TUGENDREICH,

, about to become a citizen of the United .States of America, residing at Jersey City, in the county of Hudson and State of New Jersey, have invented certain newand useful Improvements in Corks, of which the following is a s ecification, reference being bad therein to tie accompanying drawing.

My invention relates to improvements in cork wood or composition cork and is adapted for use as a substitute for cork.

. In carrying out my invention I make a hot solution of chrome alum of bichromate of otash by mixing about four parts of boiing water to about one part of the chrome alum or the bichromate of potash. I then prepare a solution comprising from about SIX to seven parts of boiling water to one part of glue, to which I add aboutten percent. (10%) 6f gl cerin. In this latter solution I add cork s iavings or ground cork as inay be found preferable and thoroughl the whole worked in together. The mass is then preferably poured u on a slab and rolled by hot rolls into the desired thickness or shape or may be placed in molds and compressed or otherwise manipulated as found convenient, after which the product is preferably left to dry in the sunlight for a period of not less than one half hour.

Where it is desired to color the roduct anilin dye may-be mixed with tie glue and glycerin solution before the chrome alum or bichromate of otash is added. The

' solution formedfrom t e chrome alum has a the mass should, of course, be carrier on' I before the material dries and sets, after which it will be. found topresent a uniform,

tough and durable substance almost as' Specification of Letters Patent. I

Application filed April 5, 1907. Serial No. 366,841.

Patented Jan. 5, 1909.

light as the natural cork and ossessing the a ditional advantages. of being 0th fire proofand water roofin uality. The material thus former is excel ently adapted for in-' sulating and padding purposes and may be used for floor coverin mats, corks, wheel tires, lifepreservers, fil ing and various other purposes in the arts wherein a durable, water proofing, fire proofing and non-poisonous ma- I term] may be desired.

Where the material is adapted for use in corks for bottles containing acids etc. it has been found referable to prepare a hot solution of para n in which the corks are di ed and coated prior to use.

he natural cork may be said to form the body of the product and mayin some cases .be mixed with sand, hair or other forei n ingredien s for hardening or thickenin t e product ccording to the class ofwor for which it is to be used. The glue solution is adapted as a binder and the addition of glycerin adds to the elasticity of the produ'ct where desirable and the bichromate of potash or-chrome alum solution may be said to be the fixing bath for setting the mixture after the same has been thoroughly combined.

Various modifications may be made without departing from the spirit of the invention. Having described the invention what I claim as new and desire to secure by Letters Patent isi I The process of makin com osition cork consisting in making a ct so utionof bi chromate of potash in I the proportion of about four parts boiling water to about one.

part bichromate of potash, a separate solution of about six parts boiling water to one of glue adding about seven tenths of'one part glycerin, adding as much cork to said se arate solution as it will thorou hly cover, a ding said bichromate of potash solution, thoroughly mixing and dryin same toether, and said material formed into shape or use.

In testimony whereofl aflix my signature in presence of two" witnesses. I EMIL TUGENDREICH. Witnesses:

LOUISE ENDERLE, THOMAS A. HILL. 

